| Discovery of Pseudofrenelopsis gansuensis from the Lower Cretaceous of Wangqing, Jilin Province, and Its Significance in Correlation of Cretaceous Red Beds in China |
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| 作者姓名： | YANG Xiaoju DENG Shenghui |
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| 作者单位： | Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences,Nanjing, Jiangsu 210008;Research Institute of Petroleum Exploration and Development, Beijing 100083 |
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| 基金项目： | The work was financially supported by the National Basic Research Programme of China, grant 2006CB701400, the National Natural Science Foundation of China, grant NFSC 40572010. |
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| 摘 要： | New data from abundant vegetative shoots and cuticular analysis are provided for the Cretaceous cheirolepidiaceous conifer Pseudofrenelopsis gansuensis Deng, Yang et Lu. The material was found from a new locality of the Lower Cretaceous strata in the Luozigou Basin, Wangqing, Jilin Province, northeastern China. Pseudofrenelopsis is a common plant in the Dalazi Formation of the Yanji Basin about 150 km from Wangqing, but there exists different species, Pseudofrenelopsis dalatzensis only. Both P. dalatzensis and P. gansuensis have been recorded from the Lower Cretaceous of Jiuquan, Gansu Province, but they are in different stratigraphic horizons. The Lower Cretaceous plant-bearing strata in Luozigou have used to correlate with the Dalazi Formation of the Yanji Basin. The discovery of P. gansuensis, which is lower in horizon than P. dalatzensis in Jiuquan, may indicate that they are also different in horizon in Jilin. Cheirolepidiaceous conifers are among the few fossils of red beds of the Early Cretaceous in China. The present discovery of Pseudofrenelopsis gansuensis provides important evidence for classification, correlation and determination of geological ages of the Early Cretaceous non-marine red deposits of the two separate basins in remote areas of North China.
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| 关 键 词： | Cheirolepidiaceae Cretaceous Dalazi Formation Pseudofrenelopsis red beds stratigraphic correlation |
| 收稿时间： | 2007/8/29 0:00:00 |
| 修稿时间： | 2007/9/25 0:00:00 |
Discovery of Pseudofrenelopsis gansuensis from the Lower Cretaceous of Wangqing, Jilin Province, and Its Significance in Correlation of Cretaceous Red Beds in China |
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| Authors: | YANG Xiaoju DENG Shenghui |
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| Abstract: | New data from abundant vegetative shoots and cuticular analysis are provided for the Cretaceous cheirolepidiaceous conifer Pseudofrenelopsis gansuensis Deng,Yang et Lu.The material was found from a new locality of the Lower Cretaceous strata in the Luozigou Basin,Wangqing,Jilin Province,northeastern China.Pseudofrenelopsis is a common plant in the Dalazi Formation of the Yanji Basin about 150 km from Wangqing,but there exists different species,Pseudofrenelopsis dalatzensis only.Both P.dalatzensis and P.gansuensis have been recorded from the Lower Cretaceous of Jiuquan,Gansu Province,but they are in different stratigraphic horizons.The Lower Cretaceous plant-bearing strata in Luozigou have used to correlate with the Dalazi Formation of the Yanji Basin. The discovery of P.gansuensis,which is lower in horizon than P.dalatzensis in Jiuquan,may indicate that they are also different in horizon in Jilin.Cheirolepidiaceous conifers are among the few fossils of red beds of the Early Cretaceous in China.The present discovery of Pseudofrenelopsis gansuensis provides important evidence for classification,correlation and determination of geological ages of the Early Cretaceous non-marine red deposits of the two separate basins in remote areas of North China. |
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| Keywords: | Cheirolepidiaceae Cretaceous Dalazi Formation Pseudofrenelopsis red beds stratigraphic correlation |
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